Jawaban:
114. A, 117. B 118. D 119. A
Pertanyaan:
(Terlampir)
Langkah Penyelesaian dan Jawaban:
114. √(1,2) × √(1,2)
√(1,2) × √(1,2) = (√(1,2))² ⇒ simbol akar hilang karena dikuadratkan
∴ √(1,2) × √(1,2) = 1,2
117. Luas persegi = sisi²
2(1/4) = 9/4
sisi² = 9/4
sisi = ± √9/4 = |√9/√4| = |3/2| = 1,5 cm
∴ sisi persegi tersebut adalah 1,5 cm
118. Keliling = 4 x sisi
luas = 6,25 cm²
6,25 = 625/100
sisi² = 625/100
sisi = ± √(625/100) = |√625/100| = 25/10 = 5/2 cm
Keliling = 4 × 5/2
∴ Keliling = 10 cm
119. (√24 × √24)/(√2 × √18)
(√24 × √24) = (√24)² = 24
(√2 × √18) = √36 = 6
(√24 × √24)/(√2 × √18) = 24/6
∴ (√24 × √24)/(√2 × √18) = 4
Hope this answer will help ya :)
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Jawaban:
114. A, 117. B 118. D 119. A
Operasi Pangkat dan Akar
Pertanyaan:
(Terlampir)
Langkah Penyelesaian dan Jawaban:
114. √(1,2) × √(1,2)
√(1,2) × √(1,2) = (√(1,2))² ⇒ simbol akar hilang karena dikuadratkan
∴ √(1,2) × √(1,2) = 1,2
117. Luas persegi = sisi²
2(1/4) = 9/4
sisi² = 9/4
sisi = ± √9/4 = |√9/√4| = |3/2| = 1,5 cm
∴ sisi persegi tersebut adalah 1,5 cm
118. Keliling = 4 x sisi
luas = 6,25 cm²
6,25 = 625/100
sisi² = 625/100
sisi = ± √(625/100) = |√625/100| = 25/10 = 5/2 cm
Keliling = 4 × 5/2
∴ Keliling = 10 cm
119. (√24 × √24)/(√2 × √18)
(√24 × √24) = (√24)² = 24
(√2 × √18) = √36 = 6
(√24 × √24)/(√2 × √18) = 24/6
∴ (√24 × √24)/(√2 × √18) = 4
Hope this answer will help ya :)